Micro light emitting diode display device
Active Publication Date: 2020-12-31
LG DISPLAY CO LTD
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Benefits of technology
The present patent provides a micro LED display device that can prevent lighting malfunctions caused by transfer errors. The device has a long lifespan, low power consumption, and is easier to implement as a flexible display. Additionally, a larger contact hole of the protective film of the micro LED helps to prevent the removal of the protective film, which could cause a short circuit and lighting malfunction. The device also has a larger allowable tolerance for transferring the micro LED within a specific range.
Problems solved by technology
For this reason, it is difficult to enlarge an overall size of the device, it is difficult for the device to emit blue light, and manufacturing costs are too high.
However, the organic electronic light emitting display device has the following problems.
But, the process using such a metal shadow mask has a limitation in forming a large area organic electronic light emitting display device.
In addition, a metal shadow mask used for a high resolution display device needs to be manufactured at a high resolution, but there is also a limitation in manufacturing such metal shadow mask.
However, the luminance of the white organic electronic light emitting display device is lowered due to light absorption by the color filter, resulting in lowered color purity.
In addition, there are limitations in manufacturing a large area display device.
Method used
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[0022]Advantages and features of the present disclosure and methods for achieving them will become apparent from the descriptions of embodiments herein below with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed herein but may be implemented in various different forms. The embodiments are provided to make the description of the present disclosure thorough and to fully convey the scope of the present disclosure to those skilled in the art.
[0023]The shapes, sizes, ratios, angles, the number of elements given in the drawings are merely, and thus, the present disclosure is not limited to the illustrated details. Like reference numerals designate like elements throughout the specification.
[0024]In relation to describing the present disclosure, when the detailed description of the relevant known technology is determined to unnecessarily obscure the gist of the present disclosure, the detailed description may be omitted. It...
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The present disclosure relates to a micro light emitting diode (LED) display device including a substrate having a plurality of thin film transistors thereon; a plurality of micro light emitting devices (LEDs) on an upper surface of the substrate, the micro LEDs each having a protecting film provided with a first contact hole to expose a portion of an upper surface of a corresponding micro LED; at least one insulating layer covering the micro LED, the insulating layer provided with a second contact hole to expose a portion of the upper surface of the corresponding micro LED; and a connection electrode in the first contact hole and the second contact hole configured to transfer signals to the micro LED, wherein the first contact hole is larger than the second contact hole.
Description
BACKGROUNDTechnical Field[0001]The present disclosure relates to a micro light emitting diode (LED) display device capable of reducing or minimizing transfer defects.Description of the Related Art[0002]Active studies on an organic material such as a conjugated polymer with conductivity have been conducted since an organic light emitting device using poly (p-phenylenevinylene; PPV) was developed. Also, studies for applying such an organic material to a thin film transistor, a sensor, a laser, a photoelectric device and the like are still ongoing. Especially, studies on an organic electronic light emitting display device are most actively progressing.[0003]An electronic light emitting device composed of phosphor-based inorganic materials may require an AC voltage of 200 V or more as an operating voltage, and a process for manufacturing the device is performed by vacuum deposition. For this reason, it is difficult to enlarge an overall size of the device, it is difficult for the device...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01L25/16H01L33/44H01L33/62H01L33/32H01L33/36
CPCH01L33/36H01L33/62H01L33/44H01L25/167H01L33/32H01L27/156H01L25/0753H01L27/124
Inventor JU, SEONG HWANSON, HYEON HOKIM, JIN YEONGSON, JUNG EUNPARK, HANCHULKIM, HYUNWOO
Owner LG DISPLAY CO LTD